What may you find on physical exam of a patient with urinary obstruction? (6)

tachy/bradycardia (depending on how far along in the process they are- tachy early, brady-late), hypothermia, dehydration, firm/distended bladder, prostatomegaly, urethral calculus on rectal or at base of os penis [dogs]

What CBC changes are associated with obstruction? (1)

PCV increased due to hemoconcentration

What biochem and blood gas changes are associated with obstruction? (6)